Curbing junk e-mail via secure classification

This publication has 4 references indexed in Scilit:

• Pricing via Processing or Combatting Junk Mail
  Published by Springer Nature ,2001
• Auditable metering with lightweight security
  Lecture Notes in Computer Science, 1997
• How to make personalized web browsing simple, secure, and anonymous
  Published by Springer Nature ,1997
• Power, ease of use and cooperative work in a practical multimedia message system
  International Journal of Man-Machine Studies, 1991